CCleaner not deleting IE & Firefox history/cookies

As mention in the title.

I'd just installed CCleaner on my desktop and am unable to clear out my browsing history & cookies even with IE & Firefox processes ended.

Can anyone help me w this?

Can you say what operating system are you using?

Which build of ccleaner?

Do you use winapp2.ini?

Win7 Home Premium 64bit

Ccleaner v6.26.1888 (64bit)

I don't know what is winapp2.ini so I'll assume I don't use it, haha.

IE & Firefox versions?

Have you tried rebooting and/or reinstalling CCleaner?